illegal start of type ???

I have that code which compares three data structures [array - array2, binaryTree - binarytree2, hashtable - hashtable2]
but it returns an error "illegal start of type"

Can anyone declare what's going wrong ???
Thanks in advance !

public class Compare
    String returnString = new String("");
    for (int i = 0; i< array2.length; i++)
        boolean containedinone = false;
        for (int j = 0; j < array1.length; j++)
            if (array1[j].equals(array2[i]))
                containedinone = true;
        if (!containedinone)
            returnString = returnString + "," + array2[i];
    if (returnString.equals(""))
        return "SAME";
        return returnString;
    boolean compare(BinaryTree a, Tree2 b) {
    Iterator ita = a.iterator();
    Iterator itb = b.iterator();
    boolean result = (a.size() == b.size());
    while(ita.hasNext() && itb.hasNext() && result) {
         if(! {
            result = false;
      return result;
     if (!Hashtable2.containsValue(Hashtable.get(key))) {
                System.out.println("Map one has value \"" + mapOne.get(key) +
                        "\" and mapTwo does not.");
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Your code has many basic problems...

You cannot write code directly inside the class...

It should be inside any of the function or constructor or static block..

 for (int i = 0; i< array2.length; i++) //Code starting with this for loop should be inside a function..
This is what is causing the error "illegal start of type"

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